Cheryl, repeat after me..."I have MS, therefore, cannot do all the normal things that "normal" peep's do in a day."
Take it easy for a few days, OK? And don't take on any over the top in the heat jobs for awhile. I hope you aren't in an exacerbation. If it doesn't get worse, wait it out and rest, rest, rest.
Don't make us come and get you.